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"""
requests.compat
~~~~~~~~~~~~~~~

This module previously handled import compatibility issues
between Python 2 and Python 3. It remains for backwards
compatibility until the next major version.
"""

import sys

# -------
# urllib3
# -------
from pip._vendor.urllib3 import __version__ as urllib3_version

# Detect which major version of urllib3 is being used.
try:
    is_urllib3_1 = int(urllib3_version.split(".")[0]) == 1
except (TypeError, AttributeError):
    # If we can't discern a version, prefer old functionality.
    is_urllib3_1 = True

# -------------------
# Character Detection
# -------------------


def _resolve_char_detection():
    """Find supported character detection libraries."""
    chardet = None
    return chardet


chardet = _resolve_char_detection()

# -------
# Pythons
# -------

# Syntax sugar.
_ver = sys.version_info

#: Python 2.x?
is_py2 = _ver[0] == 2

#: Python 3.x?
is_py3 = _ver[0] == 3

# Note: We've patched out simplejson support in pip because it prevents
#       upgrading simplejson on Windows.
import json
from json import JSONDecodeError

# Keep OrderedDict for backwards compatibility.
from collections import OrderedDict
from collections.abc import Callable, Mapping, MutableMapping
from http import cookiejar as cookielib
from http.cookies import Morsel
from io import StringIO

# --------------
# Legacy Imports
# --------------
from urllib.parse import (
    quote,
    quote_plus,
    unquote,
    unquote_plus,
    urldefrag,
    urlencode,
    urljoin,
    urlparse,
    urlsplit,
    urlunparse,
)
from urllib.request import (
    getproxies,
    getproxies_environment,
    parse_http_list,
    proxy_bypass,
    proxy_bypass_environment,
)

builtin_str = str
str = str
bytes = bytes
basestring = (str, bytes)
numeric_types = (int, float)
integer_types = (int,)